51597310340 has 24 divisors (see below), whose sum is σ = 109571820120. Its totient is φ = 20407025408.

The previous prime is 51597310327. The next prime is 51597310379. The reversal of 51597310340 is 4301379515.

It can be written as a sum of positive squares in 4 ways, for example, as 6060311104 + 45536999236 = 77848^2 + 213394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51597310294 and 51597310303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14491847 + ... + 14495406.

It is an arithmetic number, because the mean of its divisors is an integer number (4565492505).

Almost surely, 2^51597310340 is an apocalyptic number.

It is an amenable number.

51597310340 is an abundant number, since it is smaller than the sum of its proper divisors (57974509780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51597310340 is a wasteful number, since it uses less digits than its factorization.

51597310340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28987351 (or 28987349 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

Adding to 51597310340 its reverse (4301379515), we get a palindrome (55898689855).

The spelling of 51597310340 in words is "fifty-one billion, five hundred ninety-seven million, three hundred ten thousand, three hundred forty".